Histology

The following biopsy material was obtained on biopsy of an abdominal mass;

Which of the following is incorrect;

1) The normal approach to diagnosing these masses is not biopsy

2) Spontaneous regression of the material in this specimen is well documented

3) The response rate to Interferon is approximately 80%

4) Smoking is a risk factor

5) Hypercalcaemia is a recognised side-effect

Answer (scroll down)

3